參數解關聯應用於GPS雙主站相位模稜求解; The Decorrelating Ambiguity Resolution for GPS Positioning with Dual Reference Stations

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Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/769

Title:	參數解關聯應用於GPS雙主站相位模稜求解;The Decorrelating Ambiguity Resolution for GPS Positioning with Dual Reference Stations
Authors:	蔡忠明;Chung-Ming Tsai
Contributors:	土木工程研究所
Keywords:	衛星定位;解關聯;GPS Positioning;Decorrelation
Date:	2002-07-05
Issue Date:	2009-09-18 17:12:03 (UTC+8)
Publisher:	國立中央大學圖書館
Abstract:	利用相位資料進行定位時，相位模稜值具有舉足輕重的地位，原則上有求定與消去相位模稜值兩種主要的方式，在此本研究以參數解關聯的方式，期望解決相位模稜值與幾何位置高相關的問題，進而求定整數相位模稜值，來進行GPS雙主站定位。在雙主站的定位模式中，有一多餘資訊，也就是相位模稜約制，在加入了相位模稜約制的情況之下，使得參數之理論精度提高，並能在經過參數解關聯後搜尋出正確的整數解，最後進行單時刻的幾何定位求解。單時刻求解時，在加入了電離層影響參數或是方差協方差分量估計等不同的模式中，各有不同的表現，在此同時將多種模式做一比較分析。由最後的成果展現可以看出雙主站定位確有其優點。 Phase Ambiguity plays an important role in GPS positioning using phase Data. There are two major ways to deal with the ambiguity resolution, vie to solve for and to eliminate. In order to solve for high correlation between ambiguities and geometry parameters, the decorrelation method is used, and then to fix the integer ambiguities. Dual reference GPS positioning is then going on after the ambiguities fixed. In the dual reference GPS positioning, there is redundant information, i.e. ambiguity constraint. By adding ambiguity constraint into the dual reference GPS positioning model, the theoretical parameter accuracy can be improved. After parameter decorrelating ,the correct integer ambiguities can be solved and single epoch positioning can then be carried on. While doing single epoch positioning, there are different appearances in the models by adding ionosphere effecting parameter or introducing variance and covariance component estimation. Base on the analysis between the models, the results coming form the dual reference positioning shows its superior to the single reference positioning.
Appears in Collections:	[Graduate Institute of Civil Engineering] Electronic Thesis & Dissertation

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